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It really costs much to dance with a girl in red dress. Does preposition pharse 'in red dress' refer to the girl or someone, whoever will dance with her and if that refers to the girl then Could we say 'It really costs much to one in red dress or wearing red dress whoever will dance with a girl, If we want that preposition phrase to refer to one who will dance with a girl ?

For 1, 'a five kilogram pack' is probably the most common, and for 2, 'a five kilometer journey'. This kind of structure is common with numbers, units of measurement and nouns. For 3, I'd probably say 'five days of work' to be honest.

Hi sir,
I'm really confused about these two sentences
1) After 48 hours, Client had still not approved the files.
2) After 48 hours, Client has still not approved the files.
What is difference between in these two sentences and which is correct?

Note that the difference is in the verb. In 1, 'had not approved' is a past perfect form and 'has not approved' (in 2) is a present perfect form. Basically, 1 speaks about a time in the past, whereas 2 speaks about the present. But I'd recommend you read the explanations on the two pages I linked to in order to understand the difference better.

After you read those pages, if it's still not clear to you, explain to us what you think the difference is and we can help you with that.

Hello. I'm very confused about an example that I've read on the Cambridge dictionary; it is about the possessive 's and it says like this:

'Greg is her youngest daughter’s husband'.

I can't clearly understand what it means, but I guess that it has been said in a situation like this:

For instance, somebody is talking about 'Greg", who is someone's youngest daughter. In this case, for example, that person could be John. So, Greg is John's youngest daughter. Nonetheless, there is a third person that is not being referred: John's wife, whose name is Mary. That means that someone is referring to Greg, who is John's youngest daughter but not Mary's daughter (she -Greg- is Mary's stepdaughter).

Am I correct? Could you please tell me what the correct answer is?
Thank you beforehand.